Arthropods
Arthropod Vectors
Spiders
Arthropods of the class ARACHNIDA, order Araneae. Except for mites and ticks, spiders constitute the largest order of arachnids, with approximately 37,000 species having been described. The majority of spiders are harmless, although some species can be regarded as moderately harmful since their bites can lead to quite severe local symptoms. (From Barnes, Invertebrate Zoology, 5th ed, p508; Smith, Insects and Other Arthropods of Medical Importance, 1973, pp424-430)
Crustacea
Wolbachia
Insects
The class Insecta, in the phylum ARTHROPODA, whose members are characterized by division into three parts: head, thorax, and abdomen. They are the dominant group of animals on earth; several hundred thousand different kinds having been described. Three orders, HEMIPTERA; DIPTERA; and SIPHONAPTERA; are of medical interest in that they cause disease in humans and animals. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p1)
Arthropod Proteins
Arthropod Venoms
Entomology
Fossils
Scorpions
Arthropods of the order Scorpiones, of which 1500 to 2000 species have been described. The most common live in tropical or subtropical areas. They are nocturnal and feed principally on insects and other arthropods. They are large arachnids but do not attack man spontaneously. They have a venomous sting. Their medical significance varies considerably and is dependent on their habits and venom potency rather than on their size. At most, the sting is equivalent to that of a hornet but certain species possess a highly toxic venom potentially fatal to humans. (From Dorland, 27th ed; Smith, Insects and Other Arthropods of Medical Importance, 1973, p417; Barnes, Invertebrate Zoology, 5th ed, p503)
Annelida
Biological Evolution
Tribolium
Beetles
Isopoda
One of the largest orders of mostly marine CRUSTACEA, containing over 10,000 species. Like AMPHIPODA, the other large order in the superorder Peracarida, members are shrimp-like in appearance, have sessile compound eyes, and no carapace. But unlike Amphipoda, they possess abdominal pleopods (modified as gills) and their bodies are dorsoventrally flattened.
Amber
Ticks
Blood-sucking acarid parasites of the order Ixodida comprising two families: the softbacked ticks (ARGASIDAE) and hardbacked ticks (IXODIDAE). Ticks are larger than their relatives, the MITES. They penetrate the skin of their host by means of highly specialized, hooked mouth parts and feed on its blood. Ticks attack all groups of terrestrial vertebrates. In humans they are responsible for many TICK-BORNE DISEASES, including the transmission of ROCKY MOUNTAIN SPOTTED FEVER; TULAREMIA; BABESIOSIS; AFRICAN SWINE FEVER; and RELAPSING FEVER. (From Barnes, Invertebrate Zoology, 5th ed, pp543-44)
Mites
Any arthropod of the subclass ACARI except the TICKS. They are minute animals related to the spiders, usually having transparent or semitransparent bodies. They may be parasitic on humans and domestic animals, producing various irritations of the skin (MITE INFESTATIONS). Many mite species are important to human and veterinary medicine as both parasite and vector. Mites also infest plants.
Evolution, Molecular
Predatory Behavior
Molecular Sequence Data
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Molting
Periodic casting off FEATHERS; HAIR; or cuticle. Molting is a process of sloughing or desquamation, especially the shedding of an outer covering and the development of a new one. This phenomenon permits growth in ARTHROPODS, skin renewal in AMPHIBIANS and REPTILES, and the shedding of winter coats in BIRDS and MAMMALS.
Horseshoe Crabs
Acari
Daphnia
Symbiosis
Biodiversity
Ecosystem
Trees
Species Specificity
The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.
Ixodes
Hemiptera
Diptera
An order of the class Insecta. Wings, when present, number two and distinguish Diptera from other so-called flies, while the halteres, or reduced hindwings, separate Diptera from other insects with one pair of wings. The order includes the families Calliphoridae, Oestridae, Phoridae, SARCOPHAGIDAE, Scatophagidae, Sciaridae, SIMULIIDAE, Tabanidae, Therevidae, Trypetidae, CERATOPOGONIDAE; CHIRONOMIDAE; CULICIDAE; DROSOPHILIDAE; GLOSSINIDAE; MUSCIDAE; TEPHRITIDAE; and PSYCHODIDAE. The larval form of Diptera species are called maggots (see LARVA).
Population Dynamics
Ants
Insects of the family Formicidae, very common and widespread, probably the most successful of all the insect groups. All ants are social insects, and most colonies contain three castes, queens, males, and workers. Their habits are often very elaborate and a great many studies have been made of ant behavior. Ants produce a number of secretions that function in offense, defense, and communication. (From Borror, et al., An Introduction to the Study of Insects, 4th ed, p676)
Myths, models and mitigation of resistance to pesticides. (1/594)
Resistance to pesticides in arthropod pests is a significant economic, ecological and public health problem. Although extensive research has been conducted on diverse aspects of pesticide resistance and we have learned a great deal during the past 50 years, to some degree the discussion about 'resistance management' has been based on 'myths'. One myth involves the belief that we can manage resistance. I will maintain that we can only attempt to mitigate resistance because resistance is a natural evolutionary response to environmental stresses. As such, resistance will remain an ongoing dilemma in pest management and we can only delay the onset of resistance to pesticides. 'Resistance management' models and tactics have been much discussed but have been tested and deployed in practical pest management programmes with only limited success. Yet the myth persists that better models will provide a 'solution' to the problem. The reality is that success in using mitigation models is limited because these models are applied to inappropriate situations in which the critical genetic, ecological, biological or logistic assumptions cannot be met. It is difficult to predict in advance which model is appropriate to a particular situation; if the model assumptions cannot be met, applying the model sometimes can increase the rate of resistance development rather than slow it down. Are there any solutions? I believe we already have one. Unfortunately, it is not a simple or easy one to deploy. It involves employing effective agronomic practices to develop and maintain a healthy crop, monitoring pest densities, evaluating economic injury levels so that pesticides are applied only when necessary, deploying and conserving biological control agents, using host-plant resistance, cultural controls of the pest, biorational pest controls, and genetic control methods. As a part of a truly multi-tactic strategy, it is crucial to evaluate the effect of pesticides on natural enemies in order to preserve them in the cropping system. Sometimes, pesticide-resistant natural enemies are effective components of this resistance mitigation programme. Another name for this resistance mitigation model is integrated pest management (IPM). This complex model was outlined in some detail nearly 40 years ago by V. M. Stern and colleagues. To deploy the IPM resistance mitigation model, we must admit that pest management and resistance mitigation programmes are not sustainable if based on a single-tactic strategy. Delaying resistance, whether to traditional pesticides or to transgenic plants containing toxin genes from Bacillus thuringiensis, will require that we develop multi-tactic pest management programmes that incorporate all appropriate pest management approaches. Because pesticides are limited resources, and their loss can result in significant social and economic costs, they should be reserved for situations where they are truly needed--as tools to subdue an unexpected pest population outbreak. Effective multi-tactic IPM programmes delay resistance (= mitigation) because the number and rates of pesticide applications will be reduced. (+info)Hemocyanin of the horseshoe crab, Limulus polyphemus. Structural differentiation of the isolated components. (2/594)
The high molecular weight hemocyanin found in the hemolymph of the horseshoe crab, Limulus polyphemus, is composed of at least eight different kinds of subunits. Ion exchange chromatography at high pH in the presence of EDTA yields five major zones, hemocyanins I to V, three of which are electrophoretically heterogeneous. The subunits have similar molecular weights, 65,000 to 70,000, and their amino acid compositions are remarkably similar to each other and to other arthropod and molluscan hemocyanins. Digestion of the native subunits of Limulus hemocyanin by formic acid or trypsin shows considerable structural diversity which is supported by cyanogen bromide cleavage patterns and by peptide mapping of the tryptic peptides prepared from denatured hemocyanin subunits. The structural differentiation of the subunits is accompanied by functional differentiation, as shown in previous investigations of their O2 and CO affinities (Sullivan, B., Bonaventura, J., and Bonaventura, C. (1974) Proc. Natl. Acad. Sci. U.S.A. 71, 2558-2562; Bonaventura, C., Bonaventura, J., Sullivan, B., and Bourne, S. (1975) Biochemistry 13, 4784-4789). The subunit diversity of Limulus hemocyanin suggests that other electrophoretically heterogeneous hemocyanins may be composed of structurally distinct subunits. (+info)Cryptocyanin, a crustacean molting protein: evolutionary link with arthropod hemocyanins and insect hexamerins. (3/594)
Cryptocyanin, a copper-free hexameric protein in crab (Cancer magister) hemolymph, has been characterized and the amino acid sequence has been deduced from its cDNA. It is markedly similar in sequence, size, and structure to hemocyanin, the copper-containing oxygen-transport protein found in many arthropods. Cryptocyanin does not bind oxygen, however, and lacks three of the six highly conserved copper-binding histidine residues of hemocyanin. Cryptocyanin has no phenoloxidase activity, although a phenoloxidase is present in the hemolymph. The concentration of cryptocyanin in the hemolymph is closely coordinated with the molt cycle and reaches levels higher than hemocyanin during premolt. Cryptocyanin resembles insect hexamerins in the lack of copper, molt cycle patterns of biosynthesis, and potential contributions to the new exoskeleton. Phylogenetic analysis of sequence similarities between cryptocyanin and other members of the hemocyanin gene family shows that cryptocyanin is closely associated with crustacean hemocyanins and suggests that cryptocyanin arose as a result of a hemocyanin gene duplication. The presence of both hemocyanin and cryptocyanin in one animal provides an example of how insect hexamerins might have evolved from hemocyanin. Our results suggest that multiple members of the hemocyanin gene family-hemocyanin, cryptocyanin, phenoloxidase, and hexamerins-may participate in two vital functions of molting animals, oxygen binding and molting. Cryptocyanin may provide important molecular data to further investigate evolutionary relationships among all molting animals. (+info)Mechanisms of arthropod transmission of plant and animal viruses. (4/594)
A majority of the plant-infecting viruses and many of the animal-infecting viruses are dependent upon arthropod vectors for transmission between hosts and/or as alternative hosts. The viruses have evolved specific associations with their vectors, and we are beginning to understand the underlying mechanisms that regulate the virus transmission process. A majority of plant viruses are carried on the cuticle lining of a vector's mouthparts or foregut. This initially appeared to be simple mechanical contamination, but it is now known to be a biologically complex interaction between specific virus proteins and as yet unidentified vector cuticle-associated compounds. Numerous other plant viruses and the majority of animal viruses are carried within the body of the vector. These viruses have evolved specific mechanisms to enable them to be transported through multiple tissues and to evade vector defenses. In response, vector species have evolved so that not all individuals within a species are susceptible to virus infection or can serve as a competent vector. Not only are the virus components of the transmission process being identified, but also the genetic and physiological components of the vectors which determine their ability to be used successfully by the virus are being elucidated. The mechanisms of arthropod-virus associations are many and complex, but common themes are beginning to emerge which may allow the development of novel strategies to ultimately control epidemics caused by arthropod-borne viruses. (+info)Internal phylogeny of the Chilopoda (Myriapoda, Arthropoda) using complete 18S rDNA and partial 28S rDNA sequences. (5/594)
The internal phylogeny of the 'myriapod' class Chilopoda is evaluated for 12 species belonging to the five extant centipede orders, using 18S rDNA complete gene sequence and 28S rDNA partial gene sequence data. Equally and differentially weighted parsimony, neighbour-joining and maximum-likelihood were used for phylogenetic reconstruction, and bootstrapping and branch support analyses were performed to evaluate tree topology stability. The results show that the Chilopoda constitute a monophyletic group that is divided into two lines, Notostigmophora (= Scutigeromorpha) and Pleurostigmophora, as found in previous morphological analyses. The Notostigmophora are markedly modified for their epigenic mode of life. The first offshoot of the Pleurostigmophora are the Lithobiomorpha, followed by the Craterostigmomorpha and by the Epimorpha s. str. (= Scolopendromorpha + Geophilomorpha), although strong support for the monophyly of the Epimorpha s. lat. (= Craterostigmomorpha + Epimorpha s. str.) is only found in the differentially weighted parsimony analysis. (+info)Divergence time estimates for the early history of animal phyla and the origin of plants, animals and fungi. (6/594)
In the past, molecular clocks have been used to estimate divergence times among animal phyla, but those time estimates have varied widely (1200-670 million years ago, Ma). In order to obtain time estimates that are more robust, we have analysed a larger number of genes for divergences among three well-represented animal phyla, and among plants, animals and fungi. The time estimate for the chordate-arthropod divergence, using 50 genes, is 993 +/- 46 Ma. Nematodes were found to have diverged from the lineage leading to arthropods and chordates at 1177 +/- 79 Ma. Phylogenetic analyses also show that a basal position of nematodes has strong support (p > 99%) and is not the result of rate biases. The three-way split (relationships unresolved) of plants, animals and fungi was estimated at 1576 +/- 88 Ma. By inference, the basal animal phyla (Porifera, Cnidaria, Ctenophora) diverged between about 1200-1500 Ma. This suggests that at least six animal phyla originated deep in the Precambrian, more than 400 million years earlier than their first appearance in the fossil record. (+info)Animal mitochondrial genomes. (7/594)
Animal mitochondrial DNA is a small, extrachromosomal genome, typically approximately 16 kb in size. With few exceptions, all animal mitochondrial genomes contain the same 37 genes: two for rRNAs, 13 for proteins and 22 for tRNAs. The products of these genes, along with RNAs and proteins imported from the cytoplasm, endow mitochondria with their own systems for DNA replication, transcription, mRNA processing and translation of proteins. The study of these genomes as they function in mitochondrial systems-'mitochondrial genomics'-serves as a model for genome evolution. Furthermore, the comparison of animal mitochondrial gene arrangements has become a very powerful means for inferring ancient evolutionary relationships, since rearrangements appear to be unique, generally rare events that are unlikely to arise independently in separate evolutionary lineages. Complete mitochondrial gene arrangements have been published for 58 chordate species and 29 non-chordate species, and partial arrangements for hundreds of other taxa. This review compares and summarizes these gene arrangements and points out some of the questions that may be addressed by comparing mitochondrial systems. (+info)Molecular characterization of American cockroach tropomyosin (Periplaneta americana allergen 7), a cross-reactive allergen. (8/594)
Inhalation of allergens produced by the American cockroach (Periplaneta americana) induces IgE Ab production and the development of asthma in genetically predisposed individuals. The cloning and expression in Escherichia coli of P. americana tropomyosin allergen have been achieved. The protein shares high homology with other arthropod tropomyosins (80% identity) but less homology with vertebrate ones (50% identity). The recombinant allergen was produced in E. coli as a nonfusion protein with a yield of 9 mg/l of bacterial culture. Both natural and recombinant tropomyosins were purified by isoelectric precipitation. P. americana allergen 1 (Per a 1) and Per a 7 (tropomyosin) are to date the only cross-reacting allergens found in cockroaches. ELISA and Western blot inhibition experiments, using natural and recombinant purified tropomyosins from shrimp and cockroach, showed that tropomyosin induced cross-reactivity of IgE from patients allergic to these allergens, suggesting that this molecule could be a common allergen among invertebrates. (+info)Diplopoda
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Collembola
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Threatened arthropods
... critically endangered arthropods List of endangered arthropods List of vulnerable arthropods List of near threatened arthropods ... Even if constant arthropod total biomass results after certain arthropod extinctions, the ecosystem stability is compromised by ... Conservatively at least eighty percent of all living animal species are arthropods. Since arthropods constitute the majority of ... Resources about Arthropods Redak, Richard (2000). "Arthropods and Multispecies Habitat Conservation Plans: Are We Missing ...
Spiracle (arthropods)
A spiracle or stigma is the opening in the exoskeletons of insects and some spiders to allow air to enter the trachea. In the respiratory system of insects, the tracheal tubes primarily deliver oxygen directly into the animals' tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss. This is done by contracting closer muscles surrounding the spiracle. In order to open, the muscle relaxes. The closer muscle is controlled by the central nervous system, but can also react to localized chemical stimuli. Several aquatic insects have similar or alternative closing methods to prevent water from entering the trachea. The timing and duration of spiracle closures can affect the respiratory rates of the organism. Spiracles may also be surrounded by hairs to minimize bulk air movement around the opening, and thus minimize water loss. Although all insects have spiracles, only some spiders have them, such as orb weavers and wolf spiders. Ancestrally, spiders have book ...
Arthropods in culture
This article describes the roles played by arthropods in human culture. The arthropods are a phylum of animals with jointed ... Arthropods appear in folklore, in mythology, and in religion. Since Insects in mythology and in religion are covered elsewhere ... Arthropods play many roles in human culture, the social behaviour and norms in human societies transmitted through social ... Other arthropods with cultural significance include crustaceans such as crabs, lobsters, and crayfish, which are popular ...
Arthropods in film
Since arthropods can be harmful in so many ways, using insects and other arthropods to frighten people in movies was a logical ... On gigantic arthropods, Charles Q. Choi stated that, if the atmosphere had a higher percentage of oxygen, arthropods would be ... Arthropods are effective tools to instill horror, because fear of arthropods may be conditioned into people's minds. Indeed, ... Undoubtedly, arthropods are dangerous for their potential to carry disease. Somewhat less apparently, arthropods cause damage ...
Optic lobe (arthropods)
The optic(al) lobe of arthropods is a structure of the protocerebrum that sits behind the arthropod eye (mostly compound eyes) ... v t e (All stub articles, Insect stubs, Arthropod anatomy, Animal nervous system). ...
List of fictional arthropods
This list of fictional arthropods is subsidiary to the list of fictional animals. It is restricted to notable insect, arachnid ... Tickle - A ladybug Suzy's Zoo Zoom Zoom - A grasshopper Suzy's Zoo Endermite - A silverfish-related arthropod from Minecraft ...
List of endangered arthropods
... arthropods List of vulnerable arthropods List of critically endangered arthropods List of recently extinct arthropods List of ... Critically endangered arthropods are listed separately. There are 1010 arthropod species which are endangered or critically ... 6.5% of all evaluated arthropod species are listed as endangered. The IUCN also lists 27 arthropod subspecies as endangered. No ... Additionally 2875 arthropod species (30% of those evaluated) are listed as data deficient, meaning there is insufficient ...
Arthropods associated with sloths
Arthropods of South America, Sloths, Parasitic arthropods of mammals). ... Beetles form a prominent portion of the arthropod community associated with sloth and sloth dung. A number of species of the ... Research in the area of Manaus, Brazil, on sloths and their associated arthropod fauna of sloths, reveals a diverse and dynamic ... A large number of arthropods are associated with sloths. These include biting and blood-sucking flies such as mosquitoes and ...
List of vulnerable arthropods
... arthropods List of endangered arthropods List of critically endangered arthropods List of recently extinct arthropods List of ... 11% of all evaluated arthropod species are listed as vulnerable. The IUCN also lists 29 arthropod subspecies as vulnerable. No ... See: List of endangered arthropods, List of critically endangered arthropods. Vulnerable, endangered and critically endangered ... Additionally 2875 arthropod species (30% of those evaluated) are listed as data deficient, meaning there is insufficient ...
Arthropod
... were arthropods, but later study shows that their affinities of being origin of arthropods are not reliable. Small arthropods ... of the evolution from Anomalocaris to true arthropods and could be at the evolutionary root of true arthropods. Arthropods ... The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their ... Although arthropods are the most numerous phylum on Earth, and thousands of arthropod species are venomous, they inflict ...
List of data deficient arthropods
List of least concern arthropods List of near threatened arthropods List of vulnerable arthropods List of endangered arthropods ... No subpopulations of arthropods have been evaluated by the IUCN. This is a complete list of data deficient arthropod species ... 30% of all evaluated arthropod species are listed as data deficient. The IUCN also lists 17 arthropod subspecies as data ... List of critically endangered arthropods List of recently extinct arthropods "IUCN Red List version 2016.1". The IUCN Red List ...
List of recently extinct arthropods
List of least concern arthropods List of near threatened arthropods List of vulnerable arthropods List of endangered arthropods ... List of critically endangered arthropods List of data deficient arthropods "IUCN Red List version 2016-2". The IUCN Red List of ... and two extinct in the wild species of arthropod. Possibly extinct species Mecistocephalus cyclops Mecistocephalus sechellarum ...
List of critically endangered arthropods
List of least concern arthropods List of near threatened arthropods List of vulnerable arthropods List of endangered arthropods ... No subpopulations of arthropods have been evaluated by the IUCN. Additionally 2875 arthropod species (30% of those evaluated) ... 4.1% of all evaluated arthropod species are listed as critically endangered. The IUCN also lists three arthropod subspecies as ... List of recently extinct arthropods List of data deficient arthropods "IUCN Red List version 2016.1". The IUCN Red List of ...
List of arthropods of Qatar
The arthropods of Qatar consist of many organisms including insects and arachnids, as well as myriapods and crustaceans ...
List of least concern arthropods
... arthropods List of endangered arthropods List of critically endangered arthropods List of recently extinct arthropods List of ... No subpopulations of arthropods have been evaluated by the IUCN. This is a complete list of least concern arthropod species and ... 43% of all evaluated arthropod species are listed as least concern. The IUCN also lists 27 arthropod subspecies as least ... Lists of IUCN Red List least concern species List of near threatened arthropods List of vulnerable ...
Arthropods of the Cambrian Period
This list contains only extinct arthropod genera. Zhang, Xi-guang; Maas, Andreas; Haug, Joachim T.; Siveter, David J.; Waloszek ... PDF) An exceptionally preserved parasitic arthropod, Heymonsicambria taylori n.sp. (Arthropoda incertae sedis: Pentastomida), ... Cambrian arthropods, Articles needing additional categories from November 2022). ...
List of near threatened arthropods
... arthropods List of endangered arthropods List of critically endangered arthropods List of recently extinct arthropods List of ... No subpopulations of arthropods have been evaluated by the IUCN. This is a complete list of near threatened arthropod species ... 4.1% of all evaluated arthropod species are listed as near threatened. The IUCN also lists six arthropod subspecies as near ... Teinopodagrion vallenatum Lists of IUCN Red List near threatened species List of least concern arthropods List of vulnerable ...
Arthropod cuticle
In arthropods and other organisms however, it generally is a component of a complex matrix of materials. It practically always ... In arthropods, the integument, the external "skin", or "shell", is the product of a single layer of ectodermal epithelium. That ...
Arthropod assault
... is a medical term describing a skin reaction to an insect bite characterized by inflammation and eosinophilic ... Arthropod bites and stings List of cutaneous conditions Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). ...
Arthropod eye
... but before the radiation of arthropods. This view is supported if a stem-arthropod position is supported for compound-eye ... And while many arthropods today have three, four, or even six, the lack of a common pathway suggests that a pair is the most ... "Evolution of eye development in arthropods: Phylogenetic aspects", Arthropod Structure & Development, 35 (4): 319-340, doi: ... Most arthropods have at least one of two types of eye: lateral compound eyes, and smaller median ocelli, which are simple eyes ...
Arthropod gap
The arthropod gap is an apparent gap in the arthropod fossil record used in the study of evolutionary biology. It still occurs ... v t e (Articles with short description, Short description matches Wikidata, Evolution of arthropods, Gaps in the fossil record ...
Malleolus (arthropod)
Among arthropods, the insect and crustacean olfactory (antennal) pathways are typical examples. Two orders of chelicerate ... These comparisons between arthropod taxa suggest that olfactory projections are, to varying degrees, typically glomerular but ... arthropods, the scorpions and solpugids (Cl. Arachnida), present striking exceptions to this generalization. The major ...
Arthropod exoskeleton
A newly molted arthropod typically is pale in colour; in that state it is said to be teneral or a callow. It generally darkens ... Arthropod cuticle is a biological composite material, consisting of two main portions: fibrous chains of alpha-chitin within a ... After the old cuticle is shed, the arthropod typically pumps up its body (for example, by air or water intake) to allow the new ... Arthropods are covered with a tough, resilient integument or exoskeleton of chitin. Generally the exoskeleton will have ...
Arthropod mouthparts
The mouthparts of arthropods have evolved into a number of forms, each adapted to a different style or mode of feeding. Most ... In general, arthropods have mouthparts for cutting, chewing, piercing, sucking, shredding, siphoning, and filtering. This ... Insects are not, however, the ancestral form of the other arthropods discussed here. Insect mouthparts exhibit a range of forms ... Mandible (arthropod mouthpart) Rowland Shelley & Paul Marek (2005-03-01). "Centipedes: general information". East Carolina ...
Arthropod defensin
... peptides range in length from 38 to 51 amino acids. There are six conserved cysteines all involved in ... Arthropod defensins are a family defensin proteins found in mollusks, insects, and arachnids. These cysteine-rich antibacterial ... Furthermore, it was also shown that the N-terminal helix region in arthropod or insect defensins is also not required for ... However it appears that defensins of vertebrates, arthropods, plants, and fungi arose independently. This is supported by 3D ...
Arthropod adhesion
Arthropods, including insects and spiders, make use of smooth adhesive pads as well as hairy pads for climbing and locomotion ... Both hairy and smooth pads in arthropods act to maximize the amount of contact with a surface. The foot pads of flies are ... The exact mechanisms of arthropod adhesion are still unknown for some species but this topic is of great importance to ... Smooth adhesive pads are an example of convergent evolution between amphibians (geckos and frogs), arthropods and mammals ( ...
Arthropod leg
The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod ... Some authors posit up to eleven segments per leg for the most recent common ancestor of extant arthropods but modern arthropods ... In arthropods, each of the leg segments articulates with the next segment in a hinge joint and may only bend in one plane. This ... The appendages of arthropods may be either biramous or uniramous. A uniramous limb comprises a single series of segments ...
Thorax (arthropod anatomy)
It is also called mesosoma or cephalothorax in other arthropods. It is formed by the prothorax, mesothorax and metathorax and ...
Sternum (arthropod anatomy)
"sterna") is the ventral portion of a segment of an arthropod thorax or abdomen. In insects, the sterna are usually single, ... The term is also used in other arthropod groups such as crustaceans, arachnids and myriapods. Sternites on the pleon (abdomen) ... though seemingly not homologous with those of arthropods. Ventrites are externally visible sternites. Usually the first ...
Maxilla (arthropod mouthpart)
In arthropods, the maxillae (singular maxilla) are paired structures present on the head as mouthparts in members of the clade ... In most cases, two pairs of maxillae are present and in different arthropod groups the two pairs of maxillae have been ... although reduced in number since the open circulatory system of arthropods lessens the demand on separate excretory organs. The ... anterior location is probably because these organs must be developed early on in the embryo and millipedes and other arthropods ...
Mosquitoes, Ticks & Other Arthropods - Chapter 3 - 2020 Yellow Book | Travelers' Health | CDC
Mosquitoes, Ticks & Other Arthropods. John-Paul Mutebi, John E. Gimnig. Because vector control programs vary in coverage and ... Expert review of the evidence base for arthropod bite avoidance. J Travel Med. 2010 May-Jun; 17(3):182-92. ... Clothing treated with the other repellent products described above (such as DEET) provides protection from biting arthropods ... Permethrin-treated clothing repels and kills ticks, chiggers, mosquitoes, and other biting and nuisance arthropods. Clothing ...
DK Nature: Arthropods
... all belong to a super-group of invertebrates called arthropods. Arthro ... DK Nature: Arthropods. WHAT FEATURES DO ARTHROPODS SHARE? WHAT IS THE DIFFERENCE BETWEEN A CENTIPEDE AND A MILLIPEDE? DO ALL ... all belong to a super-group of invertebrates called arthropods. Arthropods are more numerous and varied than any other animal ... All arthropods have bodies divided into segments and covered with a hard EXOSKELETON. This tough casing is made of a protein ...
Arthropods - basic features: MedlinePlus Medical Encyclopedia Image
How arthropods got their legs | Science News
New fossils reveal how arthropods evolved branching limbs. ... How arthropods got their legs. Fossils show flaps that fused to ... ANCIENT ARTHROPOD Aegirocassis benmoulae used the flaps on its body (two visible on this fossil) to swim and breathe. Peter Van ... Many present-day arthropods, such as crustaceans, have combined these two flaps, forming legs. "You can then connect muscles ... These modifications give arthropods more control over their movement.. "In anomalocaridids these structures are still separate ...
Arthropods Poster | Carolina.com
Palaeos Arthropods: Crustacea: Malacostraca
The following is from Wikipedia. To save time, refernces have not been hyperlinked. The class Malacostraca is united by a number of well-defined and documented features, which were recognised a century ago by William Thomas Calman, who in 1904 ,[1] and 1909 described these common morphological features and introduced the major taxonomic subdivisions of the Malacostraca which are still in use today: he divided the Malacostraca in two subclasses the Phyllocarida and the Eumalacostraca, which is further subdivided into four superorders: Eucarida, Peracarida, Hoplocarida and Syncarida.[8] Calman coined the term caridoid facies for the common eumalacostracan (shrimp-like) features; the most important of these is the constant number of segments in each tagma: members of this class have five segments in the cephalon, eight thoracic segments (thoracomeres) and six segments in the pleon and possess a telson, which forms a characteristic tail fan when the uropods are present. Many other characteristic ...
Focus on Arthropods Research - Nova Science Publishers
Focus on Arthropods Research opens with an analysis of the various factors that influence these communities. Some studies ... Some arthropods, like the beetle Scaurus punctatus (Coleoptera: Tenebrionidae) are considered beneficial in terrestrial ... Chapter 3. Arthropods and Their Pathogens: The Epizootiology and Biology of Some Gregarines (Protozoa: Apicomplexa) from ... Chapter 1. Proximal and Evolutionary Factors That Influence Arthropod Community Structure Associated to Vascular Plants. (Tovar ...
Arthropod Structure & Development - Journal - Elsevier
Development publishes original research and review articles dealing with all levels of fossil and extant arthropod structure… ... Arthropod Structure & Development. Publishing options:OAOpen Access. SSubscription. Guide for authors. Track your paper. *. ... The journal Arthropod Structure & Development publishes original research and review articles dealing with all levels of fossil ... Vibration detection in arthropods: Signal transfer, biomechanics and sensory adaptations. Johannes Strauß, Nataša Stritih- ...
Fiji Arthropod Survey - Fiji Arthropods Volume II
A Rapid Publication Medium for Fiji Arthropod Taxonomists. Drs Neal L. Evenhuis* and Daniel J. Bickel**, Co-Editors. * [email protected] ...
Mashable: Brain part vanished in modern arthropods - Uncommon Descent
Living arthropods dont have an anterior sclerite, which suggests the heads of arthropods have changed over time, experts said ... Complex Arthropod Eyes Found in Early Cambrian - June 2011. Excerpt: Complex eyes with modern optics from an unknown arthropod ... Mashable: Brain part vanished in modern arthropods. Posted on May 15, 2015. Author NewsComment(1) ... An analysis of the anterior sclerites in two arthropod fossils, both more than 500 million years old, indicates that the ...
Identification of blood meals of blood-sucking arthropods
The midgut epithelium of aquatic arthropods: a critical target organ in environmental toxicology.
Identification of Arthropods by Polymerase Chain Reaction as Probes for Infectious Disease Studies in Experimental Coprolites
E. Pucu, E. Lemos, T. Rozental, M. Ogrzewalska, M. Chame, J. R. Machado-Silva, and D. Leles "Identification of Arthropods by ... Identification of Arthropods by Polymerase Chain Reaction as Probes for Infectious Disease Studies in Experimental Coprolites. ... The study of arthropods is still scarce in paleoparasitology, especially their molecular identification. In this experimental ... E. Pucu, E. Lemos, T. Rozental, M. Ogrzewalska, M. Chame, J. R. Machado-Silva, D. Leles "Identification of Arthropods by ...
Is <em>Opabinia</em>...
Then compare what you see to the arthropod checklist below. Use your mouse to hover over the image and zoom in. (Touch the ... Is Opabinia an arthropod?. Is Opabinia an arthropod?. Take a good look at the fossil and reconstruction of Opabinia. Then ... Arthropods have segmented bodies and jointed legs. Opabinia had a clearly segmented body - but did it have jointed legs? Look ... Arthropods have segmented bodies and jointed legs. Opabinia had a clearly segmented body - but did it have jointed legs? Look ...
Arthropod Order Isopoda (Sowbugs) hatch & pictures
Arthropods in dermatology - PubMed
Many arthropod products are also capable of inciting allergic responses in sensitized persons. In recent years, bites and ... Arthropods are important in medicine for a multitude of reasons. Their bites and stings may induce allergic reactions, ranging ... Arthropods in dermatology Christopher J Steen et al. J Am Acad Dermatol. 2004 Jun. ... Arthropods in dermatology Christopher J Steen 1 , Paul A Carbonaro, Robert A Schwartz ...
MSU Arthropod Research Collection to Benefit from Stimulus Grant - AgBioResearch
The MSU Department of Entomology will use a federal stimulus grant to upgrade its arthropod research collection. ... An arthropod is anything with an exoskeleton -- a hard, outer structure that provides protection and support for an organism. ... Arthropods include crustaceans and, of course, insects. With more than 1 million species identified, insects are the most ... "We have very outdated storage areas," said Anthony Cognato, MAES entomology scientist and director of the A.J. Cook Arthropod ...
PPT - Arthropods PowerPoint Presentation, free download - ID:156048
Two out of every three known species of animals are arthropods. Members of the phylum Arthropoda are found in nearly all ... Arthropods - . by g7 ivory, miles. description of arthropods. arthropods means jointed legs. all arthropods have a ... Arthropods - . - arthropods. characteristics of arthropods. members of the largest arthropod groups differ in several ... Arthropods - . insects, spiders, crabs, and lobsters are all arthropods, so there are a lot of arthropods on earth. the ...
Cambrian Bradoriid and Phosphatocopid Arthropods of North America | The Palaeontological Association
Pages that link to "Arthropod Genomics 2011" - GMOD
Ground Arthropods as Potential Indicators of Flooding Regime in the Riparian Forest of the Middle Rio Grande, New Mexico
Jean-Luc E. Cartron, Manuel C. Molles, Jennifer F. Schuetz, Clifford S. Crawford, and Clifford N. Dahm "Ground Arthropods as ... Ground Arthropods as Potential Indicators of Flooding Regime in the Riparian Forest of the Middle Rio Grande, New Mexico. ... Arthropod counts and hierarchical cluster analyses of the sites indicated (1) significantly greater abundance of carabid ... In 2001 and 2002, we pit trapped arthropods at eight riparian forest sites along the middle Rio Grande, four characterized by ...
PAR-18-860: Immune Response to Arthropod Blood Feeding (R21 Clinical Trial Not Allowed)
Immune Response to Arthropod Blood Feeding (R21 Clinical Trial Not Allowed) PAR-18-860. NIAID ... Determination of arthropod immune strategies to respond to vertebrate factors (insulin, complement, etc.) and/or the effects ... The arthropod releases salivary factors into the vertebrate host skin and ingests vertebrate-derived cytokines, growth factors ... Examination of the exchange of microbiota between the arthropod and vertebrate host and the influence these microbes have on ...
Giant arthropod wreaks havoc in upstairs science labs!! | PLHS - Science
Dryad Data -- Validation of COI metabarcoding primers for terrestrial arthropods
Data from: Validation of COI metabarcoding primers for terrestrial arthropods. Elbrecht, Vasco, University of Guelph ... We identify several suitable primer sets for arthropod metabarcoding, and specifically recommend BF3 + BR2, as it is not ... Despite this fact, the performance of primer sets employed for metabarcoding terrestrial arthropods has not been sufficiently ... 2019), Data from: Validation of COI metabarcoding primers for terrestrial arthropods, Dryad, Dataset, https://doi.org/10.5061/ ...
Allergy to Miscellaneous Household Arthropods
| Bentham Science
Of the various arthropods, humans have the greatest contact with mites and cockroaches, and as a result, allergies to these two ... Keywords: Allergy, asthma, rhinitis, urticaria, allergen, arthropods, insect. Abstract: Of the various arthropods, humans have ... Of the various arthropods, humans have the greatest contact with mites and cockroaches, and as a result, allergies to these two ... Allergy to Miscellaneous Household Arthropods. Author(s): Cheol-Woo Kim and Chein-Soo Hong Volume 14 , Issue 10 , 2007 ...
Arthropod Blocks Set 1 - For Small Hands
Format: Electronic / Topic: arthropods - OpenAGRICOLA Search Results
You searched for: Format Electronic Remove constraint Format: Electronic Topic arthropods Remove constraint Topic: arthropods ... 9. Micro-managing arthropod invasions: eradication and control of invasive arthropods with microbes ... Arthropod structure & development.. Author:. Grimaldi, David A.. View in NALs Catalog:. IND44360767. Format:. Electronic. ... Arthropod structure & development.. Author:. Dunlop, Jason A.. View in NALs Catalog:. IND44360761. Format:. Electronic. ...
Insects and arthropodsSpeciesARACHNIDSTerrestrialParasitesMosquitoesToxicity to soilGiant arthropodsExtinctExoskeletonMiddle CambrianCRUSTACEANSInsecticidePestsSpidersPathogensMollusksAbstractVirusesCharacteristicsInvertebrateVectorsMILLIPEDESHumansSmall mammalsAnthropogenicMammalsRichnessSoilCalled pitfallViralHerbivorousVenomousScorpionsBirdsBiologyForestsNumerousAnimalsGround arthropodMosquitoDiseasesDiversityExposure
Insects and arthropods3
- There are bees, other insects and arthropods, some fungi, and even a few mysteries. (smokiesinformation.org)
- The similarities between their locomotive strategy and that of much larger insects and arthropods opens up several very interesting evolutionary questions," Nirody says. (cosmosmagazine.com)
- The journal publishes re- views, research papers, and communications related to the biology, physiology, and behavior of insects and arthropods. (bvs.br)
Species26
- To my knowledge, this is not only the largest terrestrial trackway of a walking arthropod to be found so far, but is also the first record of locomotion on land for a species of Hibbertopterus (Eurypterida). (nature.com)
- This paper presents new records, range extensions, and a checklist of arthropod species found associated with the most common and widespread native tree in the Hawaiian Islands, 'öhi'a lehua (Myrtaceae: Metrosideros polymorpha Gaudichaud-Beaupré). (umd.edu)
- Together, they were part of the largest ever systematic attempt to answer a disarmingly simple question: in a patch of tropical rainforest, how many species of insects and other arthropods are there? (discovermagazine.com)
- Using computer simulations to scale that up, they estimate that the entire 6,000-hectare Manhattan-sized forest is home to around 25,000 arthropod species. (discovermagazine.com)
- It's the first solid estimate of its kind, and it reveals a surprising trend: every hectare of the forest contains almost two-thirds (64 percent) of all the arthropod species in the whole area. (discovermagazine.com)
- Methods Arthropod and bird abundances were sampled across the study area and analysed using hierarchical joint species distribution models (JSDMs). (tu-berlin.de)
- and the nature group (36 species) were positively related to arthropod abundance, but the species abundance decreased sharply with increasing anthropogenic disturbance. (tu-berlin.de)
- Main conclusions Arthropod abundance clearly modulated birds' responses to the urbanization gradient for most species. (tu-berlin.de)
- Especially at moderate levels of anthropogenic disturbance, the abundance of arthropods is key for the occurrence and abundance of bird species in urban areas. (tu-berlin.de)
- In the most comprehensive and thorough survey of its kind, an international team of scientists sampled, sorted and cataloged every arthropod species they could find in patches of Panama's San Lorenzo rainforest . (zmescience.com)
- During their survey of areas summing up to roughly three acres, the scientists estimated that a 6,000 hectare forest houses 25,000 arthropod species, 60% to 70% of which are likely to be previously unknown. (zmescience.com)
- The next 8 years were spent by the researchers identifying and cataloging the arthropod species. (zmescience.com)
- It's worth mentioning that the arthropod family houses the most multicellular species. (zmescience.com)
- Practically, for every mammal species, there are 300 arthropod species that live in the rainforest alone. (zmescience.com)
- Some 0.48 hectares in combined surface were directly studied, where 6144 arthropod species were identified. (zmescience.com)
- By scaling up diversity values and extrapolating their known data, the researchers estimated the rainforest reserve harbors in excess of 25,000 arthropod species. (zmescience.com)
- This is good news, as it means that to determine the species diversity of a tropical rainforest, we need not sample gigantic areas: a total of one hectare may suffice to get an idea of regional arthropod richness - provided that this total includes widely spaced plots representative of variation within the forest," said Roslin. (zmescience.com)
- The scientists found a link between the number of arthropod species and the richness of plant diversity in the area. (zmescience.com)
- A new study on the interactions of microplastics and chemicals on soil arthropods reveals that the effects are dependent on the type of microplastic and the exposed arthropod species. (miljo.fi)
- The researchers aimed at finding out how the co-exposure with microplastics alters the effects of chlorpyrifos on soil arthropods, and whether the effects are dependent on the type of microplastic and the exposed arthropod species. (miljo.fi)
- In general, arthropods either showed no pronounced seasonal peak in abundance, or a summer peak, although these patterns differed between habitat components within species, and between species. (up.ac.za)
- Quantitative analyses highlighted prominent differences between the two habitat components in arthropod community structure, despite the fact that most species were common to both of them. (up.ac.za)
- Chapters cover such topics as arthropods as food for humans, arthropods as a bioindicator species, use of arthropods in the cosmetic and pharmaceutical industries, arthropods and their conservation status, diets for raising arthropods, and much more. (doabooks.org)
- On the other hand, if arthropods and tardigrades converged upon this strategy independently, then there's much to be said about what makes this strategy so palatable for species in different environments. (cosmosmagazine.com)
- Understanding how plant species richness influences the diversity of herbivorous and predatory/parasitic arthropods is central to community ecology. (sun.ac.za)
- Interestingly, several species including one trematode, one nematode and four arthropods generated FABP mRNA variants via alternative splicing. (nottingham.ac.uk)
ARACHNIDS1
- Click to view larger map Arthropods are an incredibly diverse group of organisms that includes insects, crustaceans, and arachnids among many others. (asu.edu)
Terrestrial1
- The two terrestrial arthropods used in our tests are the woodlouse Porcellio scaber and the springtail Folsomia candida . (miljo.fi)
Parasites1
- Among them are ticks, which are small bloodsucking parasites and arthropods. (medlineplus.gov)
Mosquitoes3
- Blood - feeding arthropods , such as mosquitoes and ticks , can harbour a variety of viral pathogens that can cause infectious diseases in both human and animal hosts. (bvsalud.org)
- In this review , we discuss the arthropod immune response to viral infections with a primary focus on the innate immune responses of ticks and mosquitoes . (bvsalud.org)
- Zika virus is an arthropod-borne flavivirus, which is transmitted primarily by mosquitoes of the Aedes genus, but can also be transmitted through sexual intercourse. (bvsalud.org)
Toxicity to soil2
- The article "Modulation of chlorpyrifos toxicity to soil arthropods by simultaneous exposure to polyester microfibers or tire particle microplastics" was published in Applied Soil Ecology on the 15 September 2022. (miljo.fi)
- Salla Selonen, Anita Jemec Kokalj, Hiba Benguedouar, Somayye Sadat Alavian Petroody, Andraž Dolar, Damjana Drobne, Cornelis A.M. van Gestel: Modulation of chlorpyrifos toxicity to soil arthropods by simultaneous exposure to polyester microfibers or tire particle microplastics, Applied Soil Ecology, Volume 181, 2023. (miljo.fi)
Giant arthropods1
- This evidence of lumbering movement indicates that these giant arthropods, now extinct, could survive out of water at a time when the earliest tetrapods were making their transition to the land. (nature.com)
Extinct1
- Look at, learn about and colour 17 extinct arthropods in this book! (nhbs.com)
Exoskeleton3
- There are many functions of the arthropod exoskeleton. (earthlife.net)
- Despite comprising the same fibrous compound found in other arthropods, chitin, the thin exoskeleton of a fly does not provide the same protection. (earthlife.net)
- Some of these released substances are caustic and can burn the exoskeleton of other arthropods or cause skin and mucous inflammation in bigger animals. (wordpress.com)
Middle Cambrian5
- An extensive cladistic analysis resolved Kootenichela as sister-taxon to the enigmatic Worthenella cambria from the middle Cambrian (Series 3, Stage 5), Burgess Shale Formation in Yoho National Park (British Columbia), which is herein reinterpreted as a megacheiran arthropod. (bioone.org)
- A new lobopodian from the middle Cambrian of Utah: did swimming body flaps convergently evolve in stem‐group arthropods? (semanticscholar.org)
- The arthropod Alalcomenaeus cambricus Simonetta, from the Middle Cambrian Burgess Shale of British Columbia. (palass.org)
- Exceptionally preserved nontrilobite arthropods and Anomalocaris from the Middle Cambrian of Utah. (palass.org)
- Middle Cambrian arthropods from Utah. (palass.org)
CRUSTACEANS1
- Mandibulate arthropods (myriapods, hexapods and crustaceans) account for a major component of extant animal diversity but their origins remain unclear. (semanticscholar.org)
Insecticide1
- To increase the understanding of the combined effects of microplastics and chemicals on soil arthropods, the researchers studied the effects of polyester fibers and tire particles on the toxicity of the insecticide chlorpyrifos. (miljo.fi)
Pests2
- Documents currently available on web sites of the Ministries of Agriculture of Ontario, Quebec and the Maritime provinces provide images, information and crop protection recommendation for arthropods pests (insects, mites) of vineyards which are often regional in nature. (gc.ca)
- D. maculatus was the dominant resdent pest accounting or 57.07 % of the colected arthropods whle Necrobia rufipe was next in importance, accounting for 21.54 %The pests were identified using keys and voucher methods. (ajol.info)
Spiders1
- A final chapter provides a glimpse into the intriguing world of spiders, scorpions, crabs, and other arthropods. (regulatorbookshop.com)
Pathogens4
- Haematophagous arthropods can harbor various pathogens including viruses , bacteria , protozoa, and nematodes. (bvsalud.org)
- The earliest members of genus Homo were surely bedeviled by blood-feeding arthropods, some of which doubtless carried zoonotic pathogens. (cdc.gov)
- Settlements offered pathogens not only host density but also opportunities for their vertebrate reservoirs and arthropod vectors to cohabitate with us. (cdc.gov)
- Evolution of blood-feeding arthropods to our changing environment and evolution of some zoonoses to exploit this advantage are major links in the emergence of obscure pathogens into epidemic threats. (cdc.gov)
Mollusks1
- v.2: Arthropods and gasropod mollusks. (bvsalud.org)
Abstract1
- abstract = "In nature, arthropods have a remarkably sophisticated class of imaging systems, with a hemispherical geometry, a wideangle field of view, low aberrations, high acuity to motion and an infinite depth of field. (northwestern.edu)
Viruses3
- IMSEAR at SEARO: Antibody to Arthropod-borne viruses in small mammals of Pune district. (who.int)
- Regardless of the complex immune response of these arthropod vectors , the viruses usually manage to survive and are transmitted to the eventual host. (bvsalud.org)
- A 1980 report by the American Committee on Arthropod-borne Viruses, which documented results of global laboratory surveys conducted in 1976 and 1978, noted an additional 3 Zika virus disease cases in laboratory workers. (medscape.com)
Characteristics4
- This illustration shows some of the general characteristics of arthropods. (medlineplus.gov)
- The effectiveness of rehabilitation efforts was assessed relative to arthropod richness, vegetation and arthropod community composition, and ground-cover characteristics in 3 habitats: undisturbed, burned and weed infested ( B. tectorum ), and burned then rehabilitated with native and nonnative vegetation. (byu.edu)
- Nonmetric multidimensional scaling and nonparametric multivariate statistical procedures, including analysis of similarity and similarity percentage routines, were used to compare arthropod and vegetation community composition and ground-cover characteristics between habitats. (byu.edu)
- Arthropod richness, arthropod and vegetation community composition, and ground-cover characteristics were all useful indicators but returned slightly different results. (byu.edu)
Invertebrate1
- This book presents comprehensive information on arthropods, the most abundant and diverse group of invertebrate animals in existence today. (doabooks.org)
Vectors3
- Host-pathogen interaction in arthropod vectors: Lessons from viral infections. (bvsalud.org)
- Therefore, it is imperative to study the virus -vector-host relationships since arthropod vectors are important constituents of the ecosystem . (bvsalud.org)
- Pipkin AC Sr. Transmission of Trypanosoma cruzi by arthropod vectors: anterior versus posterior route infection. (medscape.com)
MILLIPEDES1
- Millipedes are arthropods within the class Diplopoda. (iastate.edu)
Humans1
- Dengue is the most common and important arthropod-borne viral (arboviral) illness in humans. (medscape.com)
Small mammals1
- There was no significant effect of buffer width or time since buffer establishment on the size of the difference in abundance between buffers and unharvested sites (amphibians, birds, small mammals and arthropods combined). (conservationevidence.com)
Anthropogenic2
- Quantitative studies of complete soil arthropod communities are considered essential if a thorough understanding of the structure and dynamics of soil faunas, and their likely response to anthropogenic environmental change, is to be gained. (up.ac.za)
- It is concluded that quantitative analyses of soil arthropod communities are essential if natural and anthropogenic changes in their structure are to be detected, monitored and understood. (up.ac.za)
Mammals1
- After talking about venomous mammals , fishes and lizards , 'All you need is Biology' brings you this post about venomous and poisonous arthropods. (wordpress.com)
Richness1
- Differences in arthropod richness were compared using rarefaction curves. (byu.edu)
Soil2
Called pitfall1
- The CAP LTER has been collecting arthropods since 1998 using a simple but effective technique called pitfall trapping that entails capturing organisms that fall into plastic cups buried in the ground. (asu.edu)
Viral1
- We aim to summarize critically the vector immune system and their infection transmission strategies to mammalian hosts to foster debate that could help in developing new therapeutic strategies to protect human and animal hosts against arthropod -borne viral infections . (bvsalud.org)
Herbivorous1
- Another exciting finding was that the diversity of both herbivorous and non-herbivorous arthropods could be accurately predicted from the diversity of plants", says Basset. (zmescience.com)
Venomous2
- Venomous and poisonous arthropods: what makes them different? (wordpress.com)
- The most distal part of the scorpion tail, the telson (an additional segment found in several arthropods), has become a venomous organ that ends in a stinger . (wordpress.com)
Scorpions1
- There are several groups of Lower Carboniferous (Asbian) arthropods that might have been capable of leaving large trackways 1 , but only the water scorpions, or eurypterids 1 , are likely to have left the trackway described here. (nature.com)
Birds1
- Metrosideros also provides important habitat for birds that forage for arthropod prey in the foliage (e.g., 'akepa [Loxops coccineus]) and bark (e.g. (umd.edu)
Biology1
- This Guide provides a complementary resource to these provincial websites, offering many high resolution images of arthropods and their natural enemies, as well as a systematic presentation of their biology and monitoring protocols'--Preface, page x. (gc.ca)
Forests1
- to scour the forests for arthropods. (discovermagazine.com)
Numerous1
- By their nature, arthropods are small but numerous. (discovermagazine.com)
Animals2
- Arthropods are animals that are covered in a hard external skeleton and walk on jointed legs. (discovermagazine.com)
- It provides information on the treatment of bites and stings of snakes, spider and other arthropods, and marine animals, related to diagnosis, snake venom detection, and antivenoms. (bvsalud.org)
Ground arthropod2
Mosquito1
- The dirofilarial life cycle, like that of all filarial and helminthic nematodes, consists of 5 developmental or larval stages in a vertebral host, an arthropod (mosquito) intermediate host, and a vector. (medscape.com)
Diseases1
- Background: Allergenic arthropods are crucial agents in inducing medically important respiratory diseases like asthma and the inflammation of the respiratory tract worldwide. (who.int)
Diversity1
- This is the first time that diversity of all types of arthropods has been quantified from a tropical rainforest," says ecologist Tomas Roslin of the University of Helsinki, an author of the new paper. (zmescience.com)
Exposure2
- Using PCR in conjunction with pre-enrichment culture, we detected Bartonella henselae and B. vinsonii subspe- participants reported intermittent or chronic clinical symp- cies berkhoffi i in the blood of 14 immunocompetent persons toms, including fatigue, arthralgia, myalgia, headache, who had frequent animal contact and arthropod exposure. (cdc.gov)
- 64 were used, 8 persons nii subspecies berkhoffi i infection in the blood of immu- were seroreactive to Bartonella antigens (online Appendix nocompetent persons who had arthropod and occupational Table, available from www.cdc.gov/eid/content/13/6/938- animal exposure. (cdc.gov)